X0306 4 2018-01-19 0 0001693256 Select Energy Services, Inc. WTTR 0001721029 Skarke Michael 515 POST OAK BLVD., STE. 200 HOUSTON TX 77027 0 1 0 0 EVP, Water Solutions Class A common stock 2018-01-19 4 A 0 11952 A 12977 D Class A common stock 2018-01-23 4 F 0 334 21.70 D 12643 D These shares of restricted stock, granted under the Select Energy Services, Inc. 2016 Equity Incentive Plan, will vest 1/3 on January 19, 2019, 1/3 on January 19, 2020 and 1/3 on January 19, 2021. Each restricted stock unit represents a contingent right to receive one share of WTTR Class A common stock, its cash equivalent, or any combination thereof, as determined by the administrator at the date of grant or thereafter. On January 23, 2018, the reporting person's 1,025 restricted stock units, which were granted on January 23, 2017, vested and the reporting person received 1,025 shares of Class A common stock. /s/ Michael Skarke by Adam Law, as Attorney-in-Fact 2018-02-08